Dockerfile

# Example of use:
# docker build --build-arg LTEX_VERSION=18.2.0 .
# docker run ltex-ls-plus --endless

# 1. Define where to get the source (defaults to 'from-release' for standard users)
ARG SOURCE_MODE=from-release

# --- Source Stages ---
FROM alpine AS source-from-release
ARG LTEX_VERSION
RUN test -n "$LTEX_VERSION" || (echo "Mandatory argument LTEX_VERSION not set" && false)
RUN apk add --no-cache wget tar
RUN wget -q https://github.com/ltex-plus/ltex-ls-plus/archive/refs/tags/${LTEX_VERSION}.tar.gz \
    && tar -xzf ${LTEX_VERSION}.tar.gz \
    && mv -v ltex-ls-plus-${LTEX_VERSION} /ltex-ls-plus-src

FROM alpine AS source-from-local
ARG LTEX_VERSION
RUN test -n "$LTEX_VERSION" || (echo "Mandatory argument LTEX_VERSION not set" && false)
COPY . /ltex-ls-plus-src/

FROM source-${SOURCE_MODE} AS source-resolved
# ---------------------

FROM maven:3-eclipse-temurin-21-alpine AS builder
ARG LTEX_VERSION
# Install build dependencies
RUN apk add --no-cache python3 \
    && ln -sf /usr/bin/python3 /usr/bin/python

# 2. Obtain the source code from the dynamically resolved stage
COPY --from=source-resolved /ltex-ls-plus-src /ltex-ls-plus-src
WORKDIR /ltex-ls-plus-src

# Generate completion lists
RUN python -u tools/createCompletionLists.py
# Build (-Prelease: source tarball has no .git, so report the clean ${project.version})
RUN mvn --quiet --errors -Prelease package -DskipTests
# Package binary
RUN tar -xzf target/ltex-ls-plus-${LTEX_VERSION}.tar.gz \
    && mv -v ltex-ls-plus-${LTEX_VERSION} /ltex-ls-plus

FROM eclipse-temurin:21-jre-alpine
# Add a normal user to run the program
RUN adduser -D -s /sbin/nologin -h /ltex-ls-plus ltex
USER ltex
# Copy artifacts from builder
WORKDIR /ltex-ls-plus
COPY --from=builder /ltex-ls-plus/ ./
# Entrypoint
ENTRYPOINT ["/ltex-ls-plus/bin/ltex-ls-plus"]